The list here... Asbestos Information Centre...
http://www.aic.org.uk/Storageheaters.htm
shows Creda storage heater models containing asbestos with the letters SR standing for Serious Risk against some models - all asbestos containing models appear to be older than 30 years. The model numbers you offered are not shown which suggests no asbestos.
The site qualifies itself by claiming not to be expert in Storage Heater construction - and I know nothing about storage heaters.
This answer is offered as a gesture of help - no warranty is expressed or implied - there is absolutely no need to thank me...
Good luck...
Peccavi, August 2013
